ajax备忘

js
,

不调用jquery

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function find()
{
    var drugType = document.getElementById("type").value;
    var nhiCode = document.getElementById("code").value;
    if (nhiCode.length>0){
	var xmlhttp;
	if (window.XMLHttpRequest)
	{// code for IE7+, Firefox, Chrome, Opera, Safari
	xmlhttp=new XMLHttpRequest();
	}
	else
	{// code for IE6, IE5
	xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
	}
	xmlhttp.onreadystatechange=function()
	{
        //连接状态改变时
	    if (xmlhttp.readyState==4 && xmlhttp.status==200)
	    {
		PanelDisappear("message-box");
		var messageJSON = JSON.parse(xmlhttp.responseText);
		document.getElementById("result").innerHTML= messageJSON.message;
	    } else if (xmlhttp.status==404){/
		PanelDisappear("message-box");
		document.getElementById("result").innerHTML= "连接异常";
	    }
	}
	//DOING SOMETHING
	xmlhttp.open("POST",url,true);
	xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded");
	xmlhttp.send("drugType="+drugType+"&nhiCode="+nhiCode);
    }
}